Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: udp: call skb_orphan() before skb_attempt_defer_free() Standard UDP receive path does not use skb->destructor. But skmsg layer does use it, since it calls skb_set_owner_sk_safe() from udp_read_skb(). This then triggers this warning in skb_attempt_defer_free(): DEBUG_NET_WARN_ON_ONCE(skb->destructor); We must call skb_orphan() to fix this issue.
References
- https://git.kernel.org/stable/c/0c63d5683eae6a7b4d81382bcbecb2a19feff90d
- https://git.kernel.org/stable/c/e5c8eda39a9fc1547d1398d707aa06c1d080abdd
FAQ
What is CVE-2026-23048?
CVE-2026-23048 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: udp: call skb_orphan() before skb_attempt_defer_free() Standard UDP receive path does not use skb->destructor. But skmsg layer do...
How severe is CVE-2026-23048?
CVSS scoring is not yet available for CVE-2026-23048. Check NVD for updates.
Is there a patch for CVE-2026-23048?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.